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[newegg] 2000w PSU (that's not a typo) on the egg! - Page 8

post #71 of 118
Quote:
Originally Posted by pauldovi View Post
What would be the point of having 2 power cables if you plug it into the same circuit? Extension cords = increased resistance.

This is dumb.
Well that's why he said one in the garage, and one in another room, hopefully we all have houses with different circuits for each part of the house.
    
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post #72 of 118
This is madnessssss
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post #73 of 118
Quote:
Originally Posted by bruestle2 View Post
No, he is right. As you increase distance, resistance linearly increases. With increasing amperage, resistance increases at a power of 2. If you have a high power load, you would NOT want to use an extension cable. The entire cable would get very warm/hot creating a potential fire hazard.

What would probably work better is a 220V extension cord because then you have half the amperage and 1/4th the resistance. This would allow you to have a cord run 4x as long with the same potential for disaster.

Realistically, getting a 220V line run to your room would be the best idea. Or, get a transformer to up the voltage from your 220V line in your garage (dryer) , to...say...400V and then run a line to your room, and down convert it again.

Actually power companies do the same thing. They have those high voltage power lines because resistance is SIGNIFICANTLY less. I remember in class, we calculated, that at 120V, they would lose 60% of the power having those lines run 100Miles, but with the voltage they use (can't remember) it was about 5% loss for the same distance. (Not to mention that all that amperage on a line would require MUCH higher gauge wires.)

/really long post
Exactly, but the weird thing is that the U.S are still supplying power on 110v lines instead of 220v, I'm sure it's for economical purposes (foreigners need to buy power converters and such). I mean, Europe is using 220v, even India is!
    
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post #74 of 118
Quote:
Originally Posted by Emmanuel View Post
Exactly, but the weird thing is that the U.S are still supplying power on 110v lines instead of 220v, I'm sure it's for economical purposes (foreigners need to buy power converters and such). I mean, Europe is using 220v, even India is!
What on Earth gives you that idea?!

Europe colonized India and Africa, so of course they will use the same power distribution setups. Furthermore, what is in place now was started long ago - well before tourism would have become a significant source of income.

Just because Europe and their former colonies have that setup doesn't mean we should change.
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post #75 of 118
Quote:
Originally Posted by Emmanuel View Post
Exactly, but the weird thing is that the U.S are still supplying power on 110v lines instead of 220v, I'm sure it's for economical purposes (foreigners need to buy power converters and such). I mean, Europe is using 220v, even India is!
Lower voltage allows for cheaper/thinner wires I believe, and is slightly less dangerous. Although currents have to be higher.

The reason 110-120v is still in use in the U.S. is because it works for 99% of cases, and would be cost a crapload of money to change in all households and would render a large amount of current appliances worthless without convertes for each and every one of them.
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post #76 of 118
Quote:
Originally Posted by lordikon View Post
Lower voltage allows for cheaper/thinner wires I believe, and is slightly less dangerous. Although currents have to be higher.
Not correct. Higher voltage means less current and less resistance. This allows for thinner, lower gauge wire.
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post #77 of 118
220v conversion to DC is 1-3% more efficent than 110v.
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post #78 of 118
Quote:
Originally Posted by lordikon View Post
Lower voltage allows for cheaper/thinner wires I believe, and is slightly less dangerous. Although currents have to be higher.

The reason 110-120v is still in use in the U.S. is because it works for 99% of cases, and would be cost a crapload of money to change in all households and would render a large amount of current appliances worthless without convertes for each and every one of them.
It took a while, but I found the proper article on Wikipedia explaining why 100V was chosen as the starting point in the US:
http://en.wikipedia.org/wiki/Mains_electricity

Essentially, it was done because it was deemed safer and because it would allow fillament bulbs to last longer and therefore make them competative to gas lamps.
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post #79 of 118
Quote:
Originally Posted by Emmanuel View Post
Exactly, but the weird thing is that the U.S are still supplying power on 110v lines instead of 220v, I'm sure it's for economical purposes (foreigners need to buy power converters and such). I mean, Europe is using 220v, even India is!
Japan only uses 100v, big conspiracy!
post #80 of 118
A true enthusiast's PSU is never about how much power you need, but about how stable, clean and consistent the power can be. To achieve that, you need not only a high-efficiency rating PSU, but also high AMP on a single 12V Rail. And then, you'll need some "cushion space".
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